state police on the tragedy in new town, connecticut. coverage continues live with alex witt, next. >> thank you so much, melissa. welcome, everyone to ""weekends with alex witt."" that lieutenant paul vance of connecticut state police, talking about the many facets of this investigation. some things he can answer, others he cannot. he says taking these things out of context makes for a very difficult way for people to understand what's happening and they are trying so desperately to keep things as clear as possible. once again, so many layers that they still have yet to investigate. and of course, so many questions remain about why the shooter, adam lanza, took those young children's lives as well as his mother's. joining me now with the latest in the investigation is nbc news justice correspondent, pete williams. pete, a good day to you. did we hear anything new there? >> reporter: the only thing